/* 全局样式 */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f2f5;
    color: #333;
}

/* 容器样式 */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 30px;
    background-color: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    margin-top: 60px;
    border-radius: 8px;
}

/* 标题样式 */
h1 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2.2rem;
    font-weight: 600;
}

h2 {
    color: #34495e;
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

/* 段落样式 */
p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

/* 列表样式 */
ul {
    padding-left: 25px;
    margin-bottom: 25px;
}

li {
    margin-bottom: 10px;
    color: #555;
    line-height: 1.6;
}

li:before {
    content: "• ";
    color: #3498db;
    font-weight: bold;
}

/* 页脚样式 */
.footer {
    text-align: center;
    margin-top: 40px;
    color: #95a5a6;
    font-size: 0.9rem;
    padding-top: 20px;
    border-top: 1px solid #ecf0f1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        margin-top: 20px;
        padding: 20px;
        border-radius: 0;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
}

/* 按钮样式（如果需要） */
.button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.button:hover {
    background-color: #2980b9;
}